Stop device for sliding sashes.



No. 889,484. v PATENTED JUNE 2, 1908. G. H. PARKER. STOP DEVICE FOR SLIDING SASHES.

- APPLICATION FILED FEB. 2, 1906.

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WITNESSES:

" ATTORNEYS.

THE NORRIS PETERS cm, WlSH!N TON,-D. r.

, UNITED STATES PATENT OFFICE. I

GEORGE HENRY PARKER, OF ARLINGTON, NEW JERSEY, ASSIGNOR TO JOHN WALLACE BAKER, OF STAMFORD, CONNECTICUT.

STOP DEVICE FOR SLIDING SASHES.

Specification of Letters Patent.

Patented. June 2, 1908.

Application filed February 2, 1906. Serial No. 299,109.

To all whom it may concern:

Be it known that I GEORGE HENRY PARKER, residing at Arlington, in the county of Hudson and State of New Jersey, have invented certain new and useful lm rovements in Stop Devices for Sliding Sas es, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to safety devices for windows and has for its principal object to provide a simple and effective device whereby a window sash, or similar movable member, may be permitted to be opened to a limited extent, and then positively held against further opening thereafter.

Another object thereof is to provide means for positively locking a stop device employed to limit the relative opening movement of sashes, so that tampering with said device from the outside will be prevented.

Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts which will be exem lified in the construction hereinafter descri ed and the scope of the ap lication of which will be indicated in the following claims.

In the accompanying drawing, wherein is illustrated one of several various embodiments of my invention, Figure 1 is a view in perspective, showing a pair of 006 erating stop devices mounted upon relative y mov-' able sashes, Fig. 2 is a similar view of the movable stop. Fig. 3 is a similar view of the guide for the movable stop. Fig. 4 is a similar view of the locking screw for the movable stop. Fig. 5 is a view in elevation of the fixed stop mounted upon one of the sashes.

Similar reference characters refer to simi-. lar parts throughout the several figures of the drawing.

Although it is thought that the ends and objects sought to be attained will be clearly understood without further discussion be fore entering into a detailed description of the structural features thereof, it may be well to bring to notice that my invention, as herein disclosed, has special relation to means for allowing relative movement of slidable sashes to a limited extent only, as, for instance, to afford ventilation, the arrangement being such that the sashes, when opened a predetermined amount, cannot be further opened or the sto lated by an outside intru er.

Referring now to the drawings, 1 represents the lower and 2 the upper sash, both of which are slidably mounted for flee relative movement in the frame 3, as is usual in window construction, and are provided with suitable suspending means, as cord 4, shown as one of the supports of sash 1. The term sash, as used throughout this specification and claims, is intended to include any sliding member adapted, when in its normal position, to close an opening in a wall. The upper meeting rail 5 of sash 1 has secured thereto, near one end, by suitable means, as screws 6, a hollow guide 7, which may be stamped or formed from a single strip of sheet metal, the lower edges thereof being preferably slightly separated to rovide a guiding slot 8. Guide 7 is provided in its upper wall, with a longitudinally-extending slot 9 having substantially parallel walls for a ortion of its extent, which lead into an en arged, substantially circular opening 10 in itsforward portion, the slot being of substantially key-hole form.

Incased within guide 7 and adapted to slide therein is a stop 11 having a depending kerf or ridge 12 in engagement with the walls of slot 8, the lower surface of which comes substantially flush with the lower surface of guide 7 and rests, in contact with the meeting rail. Stop 11 in its forward end has an openended, vertical, slotted extension 12, the side members of which form posts 13 that have their free ends rounded, as at 14. Between posts 13 of vertical extension 12 is provided a way 15. Extending downwardly through slot 9 of guide 7 is a screw 16, the

devices maniputhreaded end of which threads into an opening 17 in stop 11, and this screw is further provided with anenlargement or shoulder 18 intermediate the ends thereof, the diameter of which is greater than the width of the narrow portion of slot 9, but is, however, of such size as readily to pass through circular opening 10 of said slot.

Mounted upon side rail 19 of upper sash 2 at a point a short distance from the lower end thereof, is a fixed stop 20, which is vertically disposed above stop 11 and is designed to cooperate therewith, said fixed stop being herein shown as comprised by a headed screw upon the relative movement of the sashes.

driven into side rail 19. An encircling collar resting against side rail 19 provides a space between the head of screw 20 and said collar.

Although from the foregoing description, the operation of my invention should be largely apparent, it'may be noted that normally slidable stop 11 is in a retracted position in guide 7, being held in such position by means of screw 16, which clamps the said stop between the upper wall of guide 7 and shoulder 18 of said screw. WVith stop 11 in this position, no limitation whatever is put WVhen, however, it is desired to limit the relative movement of the sashes, as, for example, to provide for ventilation, it is only necessary to loosen screw 16 and, by grasping said screw, stop 11 may be slid in guide 7 to an extended position, when the vertical extension thereof will be in the path of stop 20 secured to sash 2. Screw 16 may then be turned and shoulder 18 passing through opening 10 in slot 9 of guide 7 will lock the same positively against movement. Now, when sash 2 is raised or sash 1 lowered, stops 20 and 11 will co-act and the shaft of stop 20 will pass between posts 13 of extension 12 and the head thereof, taking along the inner surfaces of said posts, comes into engagement with the horizontal portion of stop 11, when further opening movement of either or both of the sashes will be prevented. Stops 11 and 20 being thus in an interlocked condition, and stop 11 being firmly and positively locked against retraction, manipulation from the outside is impossible. The sashes, or one of them, being permitted to open but to a limited extent, it will also be impossible for a person without the window to enter theretlnough or reach the stop devices from the outside. Moreover, as the head of fixed stop 20 engages the inside wall of posts 18, unlocking thereof cannot be effected by a per son outside inserting a jimmy or other prying instrument between the meeting rails of the sashes.

It will thus be apparent that I have provided a construction well adapted to attain the objects of my invention, such that, while L the sashes are normally afforded free relative movement, the stop devices may be easily manipulated effectively to limit the relative movement thereof. The device, moreover, possesses but few parts, is cheap to manufacture and does 'not detract from the sightliness of the window structure.

It should be obvious that, while the device is particularly well adapted for the use hereinbefore described, it may be as well used in other analogous relations and yet retain its inherent advantages.

As many changes could be made in the above construction and many apparently widely different embodiments of my inven tion could be made without departing from the scope thereof, I intend that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limited sense.

I desire it also to be understood that the language used' in the following claims is intended to cover all of the generic and specific features of the invention herein described and all statements of the scope of the invention, which, as a matter of language, might be said to fall therebetween.

Having described my invention, what I claim as new and desire to secure by Letters Patent is 1* In combination, a pair of sliding sashes, a casing secured to the upper rail of one of said sashes, a bolt mounted to slide in said casing having at one end a pair of upwardly extending posts, said posts having outwardly inclined end portions, a headed member located upon the other sash adapted to be received between said posts and be guided therebetween by said outwardly inclined portions, and a locking screw adapted to slide said bolt and lock the same in an extended or retracted position.

In testimony whereof I aflix my signature, in-the presence of two witnesses.

GEORGE HENRY PARKER. 

